I'm trying to set up a test that will tell me whether a variable exists in memory or not. I'm running into the problem of my nested function preserving the local variable it uses, called "shouldBeDead". Here's my best effort, which doesn't work for me because the "shouldBeDead" variable is still alive[code]...
View 4 RepliesI just noticed a strange behaviour while looking at my application in the Flash Profiler. When I click a button in my TitleWindow then the TitleWindow doesn't get garbage collected after it is removed. I have no idea why that is happening.[code]...
View 2 RepliesI have checked and rechecked, and I do not know why these "buckets" aren't being killed when I run the reset menu function, a fresh set of eyes could really help.
Code:
package com.Views {
import flash.display.MovieClip;
import flash.display.Sprite;
import flash.events.Event;
[Code]...
i'm sure there are a lot of problems, but the only one I care about is destroying those buckets. inside the buckets, I have a listener for "removed from stage", and that kills all the listeners, etc, inside the buckets.
there is a Class A, it has a timer which updates its x position periodically. So all the instance of Class A will update their own x position. There is another Class B which extends Class A and overrides the function which updates position to change y position and call the trace function.
Now what I do now is create two instance alpha1, alpha2 of Class A and other two instance beta1, beta2 of Class B.
- alpha1 is only instantiated, but not added to the stage.
- alpha2 is instantiated, and there after added to the stage.
- beta1 is only instantiated, but not added to the stage.
- beta2 is instantiated, and there after added to the stage.
- let say after few seconds, I remove alpha2 and beta2 from stage.
Now suppose the GC fires collection, who all would be collected ?
I have that function in the class:
private function fireItemCreated(data: ByteArray): void {
setTimeout(function(): void {
var event: ItemCreatedEvent = new ItemCreatedEvent(data);
dispatchEvent(event);
}, 1000);
}
This function called to dispatch item created event when image thumbnail created.But it delays event on some time to prevent user interface freezes. And I'm guessing what could be happen if garbage collector executes after fireItemCreated function call but before timer event. Does the closure will be removed or it stays until it will be executed?
I recently posted on here about tweening in alphas of thumbnails that I was adding to a movieclip. It seems that the tween is getting garbage collected because not all of the thumbs fade in all the way. I have the tween defined outside of the function, but it is tweening a loader that is created within the function. Could this cause the tween to get garbage collected? if so, how do I fix it?
Here is the pertinent code:
var thumbTween:Tween;
var my_thumb:Loader;
function thumbLoaded(e:Event):void{
[code]...
I have had a few complications with syncing the notes coming down, then I realized tweens would be the best way to go, so I chose them.The problem is; the notes come down the screen. If there is any lag in performance, any note that is on the screen freezes on the spot, and the new notes come down, and stay in sync.This is telling me it's something to do with the tweens. The timeOuts I have set work fine for spawning notes at the right time, but the tweens are freezing on occasion, Im guessing because the timer for the tween keeps going, but flash does not notice it.Here is the code for adding the notes:
Code:
var myTween:Tween;
var timeWindow = 1;
[code].....
Consider the following segment of code:
[Code]...
Do not worry about the syntax of this code. Here is my concern - The loader object which is used to send the HTTP request and which has the onLoadComplete event registered to is not referenced from outside the loadSomeContent() function. Is there a possibility that the loader object will be garbage collected and loadCompleteHandler() will never be called?
can a loader get removed (garbage collected) whilst its still loading? does it have to be added to the stage or to an array?
View 3 RepliesWill a DisplayObject be garbage collected if the only reference keeping it in memory is set to null, but it's not removed from the display list?
View 1 RepliesI was thinking about Flash GC the other day and came up with a question about how reference counting would work in the following 4 class scenario (assume GuiMain is the movie's document class):
[Code]...
I'm using a Dictionary with weak keys to test if an object has been garbage collected. When all references to the object outside of the dictionary are removed, I expect the dictionary to no longer be populated. It seems to work for an Object, but for a Sprite it indicates that the garbage collection hasn't taken place.[code]...
View 1 RepliesI'm trying to unit test memory management. So far I have a semi-workable solution using flash.sampler.getSamples to get the difference between the number of NewObjectSamples and DeleteObjectSamples which have the same id value.
The test looks something like this:
startSampling();
new Foo();
new Foo();
[Code].....
Since there are no references to Foo I'm assuming that all instances are being garbage collected, and my code is simply wrong due to my lack of understanding how sampling works. I am trying this instead of using weakly keyed dictionary because it seems it should be less of a hack, but now I'm starting to wonder if it's worth the trouble.
When ever there are no longer any references pointing to an object in memory, that object is purged from memory and permanently forgotten by the player.
Code:
delete a; // Object has reference count of 1
delete b; // Object has reference count of 0, removed from memory
Note: remember, the delete operator only removes variable association, it does not delete objects in memory, the GC is responsible for that. Also delete will only work on non class member variables.
I have a class called MenuView which contains buttons. After a button from the menu is clicked, its content - which is contained in another class - is being attached to the existing class by the means of the new keyword, so basically it just creates SubClass inside the MenuView class (or instance of another class inside the MenuView Class object if you like):
Code:
_sign_content = new NewEntryView(width);
_sign_content.addEventListener("newEntry_submit", onNewEntrySubmit);
addChild(_sign_content);
NOTE: _sign_content is private property of the class of type NewEntryView (this class contains the content for the button clicked)
Inside this NewEntryView Class (which is being referrenced by the _sign_content property by now), there are textFields being attached to the DisplayList, eventListeners being called, subclasses being created, all that in different functions of the class.
Now when user clicks another button in the menu, i have to set _sign_content=null etc., so that GC can harvest it.
I do so this way from within MenuView class:
Code:
if(_sign_content != null) {
// remove container
removeChild(_sign_content);
[code]....
we have this variable from the internet, val(0), in a dynamic text field we can see a digit from this variable. but when we use this variable in actionscript and test it with trace, the variable shows as undefined.how can we make this work without it coming up as undefined??
View 12 RepliesI am implementing garbage collection within an AS3 app. In one part, several display objects are created within a loop like so:
for(var i:uint = 0; i <= this._exampleVector.length - 1; i++)
{
this._customText = new CustomTextObject(this._exampleVector[i].playlistText), this._customTextWidth);
[Code].....
When I try to make the _customText within the _customTextVector null, this does not work. It only makes the index inside the Vector null. how to do this or another method to garbage collect?
I'm wondering how to garbage collect a variable in Flex even if there are other objects binded to it.
View 1 RepliesIf you have a variable that is a MovieClip, Sprite, String, Number, int, uint, or a Boolean, do you remove it's reference by adding:
myVariable = null;
OR delete(myVariable);
Is there a way to test to see if a variable is present anywhere in an array of an undetermined length.
I have people selecting things, and I want to make sure they do not select the same thing twice.
I have three randomly moving movie clips and one keyboard controlled movie clip which is meant to avoid the tree random flying clips.
I want to do a hit test that basically will do something if anyone of the 3 random clips hit the keyboard controlled clip.
in the hit test i want to be able to have this work for any of the three random clips (flying pumpkins with different instance names, pumpkin1 pumpkin2 pumpkin3). This is all done on an external document class.
I thought about an array but I have no idea really
package{
import flash.display.MovieClip;
import flash.events.*;
import flash.display.*;
[Code].....
How can I test a undefined variablewith an if statement.
all a this did not work and I don't want to define a value for this variable.
name of the variable x.
if ((x == "") || (x == " ") (x == Nan))
{
trace("here");
}
Someone could find me the correct if statemtn to check an undefined variable on action script 1, mx 6..develloped with MX2004Pro.
Is there a piece of code to test if a varibale is a full number?
[Code]...
Is there a way to test a string, such as the one below to see if it's an actual number value? var theStr:String = '05'; I want to differentiate between the string value above and one such as this: var theStr2:String = 'asdfl';
View 3 Repliesi have a for loop which increments a variable 'i' and then adds this variable to a string called 'test' like so..[code]however this does not work, it wont seem to add the variable 'i' when i trace (test). All i get is undefined?
View 1 RepliesI want to display variable myblock down 10 times and then test it for collison, I am using the variable I to store the blocks, If I manally set the variable i to lets say 1 and 2 and then test for collison it works, but when I use I from the for loop it only detects one object from the array, I think that there is something probably simple missing such as an extra variable, as you can see from the code I am trying to use the' i' to replace for instance addChild(blockarray[1]);
[Code]...
This is the situation: I am trying to build an uploader that will take data collected earlier in the form before the upload occurs and then rename the uploaded file with it. I've gotten the upload itself to work, but thus far I have no luck getting any sort of renaming to work, not even by PHP. I tried Loadvars to transfer the variables over and rename it during upload, yet it says "NO" and rejects the post variables when the upload occurs. I even tried loading the variables into an external file and transfering them back to the uploader via cookie, all at the same time. Again it says "NO!", and the file is uploaded as __"filename".jpg. This is my code thus far:
[Code]...
I'd like to know for sure that my objects are deleted when I 'null' them and remove listeners etc..
I'm not sure if the debugger in CS4 has a way to display that kind of info. Is there some other way?
I am working in flex builder 3 with an XMLListCollection and have run into this (should be simple) parsing snag...The XMLListCollection Data:
<data>
<term name="NUMBERS">
<alt_form name="1"/>
[code]......
I've got a custom component (quite complex so I can't post any code here, although that shouldn't matter), that I can add to a view. When the component is deleted from the view or the view is switched I call my own dispose method which removes remaining eventListeners and kills some references so that the component can eventually be nulled and collected by the GC.
All that works perfectly fine until I add a Spark TextInput to the MXML part of the component (it took me hours to find out what is preventing the component to be collected!), so I recon that the TextInput somehow automatically adds some eventListeners.
My question is what are these listeners, or is there anything else I haven't thought of?
I'm trying to test a custom Flex 4 skinnable component, using the FlexUnit UIImpersonator class. If I run my tests from a FlashBuilder Spark only project everything works fine. If I try to test from a project with the mx component set on the classpath I get a "getElementIndex not available in non Flex 4 projects" error.Can I unit test spark components in FlexUnits visual test environment while still having the mx component set on the classpath?
UIImpersonator delegates it's method calls to a "testEnvironment".The implementation used for this "testEnvironment" is decided by the VisualTest EnvironmentBuilder class and the FlexEnvironmentBuilder class. If the FlexEnvironmentBuilder class can find the "mx.core.Container" on the classpath it returns a MX environment, else a Spark environment. Only the spark environment has valid implementations for Flex 4 relevant method calls on the UIImpersonator - like the addElement method.